Electric agricultural machine battery box, power battery and electric tractor

Abstract

The utility model provides a kind of electric farm machinery battery box, power battery and electric tractor, solve the problem that the power battery of electric tractor in the prior art is used for unreasonable layout structure to cause the high gravity center of whole vehicle, obstruct vision and the problem of insufficient endurance, wherein electric farm machinery battery box includes: frame assembly, frame assembly includes lower layer frame and upper layer frame erected on lower layer frame, and the accommodation cavity for accommodating battery module is arranged in lower layer frame and upper layer frame, the size of upper layer frame is greater than lower layer frame, and the number of battery module that can be accommodated in upper layer frame accommodation cavity is more than lower layer frame;A plurality of hanging point structures, hanging point structure includes fixed plate and the hanging point support of one end vertical fixed on fixed plate, and the outside of lower layer frame is fixed with fixed plate;Skin structure, skin structure is laid on the outer surface of frame assembly, skin structure is provided with a plurality of support notches, and the other end of hanging point support is stretched out from corresponding support notch.

Description

Technical Field

[0001] This utility model relates to the field of new energy agricultural machinery technology, and in particular to an electric agricultural machinery battery box, a power battery, and an electric tractor. Background Technology

[0002] Amid the rapid development of the new energy vehicle industry, electric tractors, as core equipment for agricultural electrification, are gradually becoming an important direction for the upgrading of modern agricultural equipment due to their advantages such as zero emissions, low noise, and high torque output. In the overall engineering design system of electric tractors, the layout and structural design of the power battery system not only directly affect the vehicle's power performance and range, but are also key factors determining the overall space utilization and driving stability.

[0003] Current electric tractors generally adopt a layout where the power battery pack is placed between the two front drive wheels, and most use the traditional rectangular or square battery box structure design. While this standardized battery structure has certain advantages in terms of manufacturing process and cost control, it exposes significant adaptability problems when dealing with the complex working conditions of agricultural operations. In agricultural operations, electric tractors need to frequently travel through undulating fields, and their large wheel configuration and large-angle steering requirements, with a maximum steering angle of over 45°, place special demands on the spatial layout of the power battery system.

[0004] Traditional rectangular or square battery structures present two technical contradictions in practical applications: First, the mounting points for connecting existing power batteries to the vehicle body are usually located at the bottom. This installation method significantly increases the height of the battery's center of gravity from the ground, resulting in a higher center of gravity for the entire vehicle. This severely affects the lateral stability of the vehicle when operating on unpaved roads. At the same time, the raised battery pack also obstructs the driver's forward view, posing a safety hazard. Second, in order to avoid interference between the steering mechanism and the battery pack, the lateral dimensions of the battery pack are forced to be compressed, resulting in insufficient utilization of the upper space of the battery compartment. This makes it difficult to achieve a high-energy-density layout, and the battery capacity cannot meet the range requirements of high-intensity operation of electric tractors, becoming a technical bottleneck restricting the widespread application of electric tractors. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide an electric agricultural machinery battery box, a power battery, and an electric tractor, so as to solve the problems of high center of gravity, obstructed vision, and insufficient range caused by the unreasonable layout structure of the power battery in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides an electric agricultural machinery battery box for housing battery modules, comprising:

[0007] The frame assembly includes a lower frame and an upper frame mounted on the lower frame. The lower frame and the upper frame are provided with cavities for accommodating battery modules. The upper frame is larger than the lower frame, and the upper frame can accommodate more battery modules than the lower frame.

[0008] Several hanging point structures, each hanging point structure including a fixed plate and a hanging point bracket with one end vertically fixed to the fixed plate, wherein the fixed plate is fixed to the outer side of the lower frame;

[0009] A skin structure is laid on the outer surface of the frame assembly. The skin structure is provided with a plurality of bracket slots, and the other end of the hanging point bracket extends out from the corresponding bracket slot.

[0010] As a more preferred approach, the lower and upper frames are rectangular frame structures formed by multiple frame beams, multiple frame vertical members, and multiple frame connecting rods. The advantage of this approach is that it clarifies the specific structure of the lower and upper frames. The rectangular frame structure, formed by multiple frame beams, vertical members, and connecting rods, has high strength and stability, effectively protecting the internal battery modules while facilitating production and assembly.

[0011] As a more preferred embodiment, the lower frame further includes multiple reinforcing crossbeams and multiple reinforcing vertical members. The reinforcing vertical members are positioned between the frame crossbeams, with both ends of each member vertically fixed to a crossbeam. The reinforcing crossbeams are horizontally positioned between the frame crossbeams, with both ends fixed to a vertical member. The four sides of the fixing plate are fixed to the frame crossbeams, vertical members, reinforcing crossbeams, and vertical members, respectively. The beneficial effect is that the reinforcing crossbeams and vertical members further enhance the structural strength of the lower frame, preventing deformation under stress. The multi-point fixing of the fixing plate to the frame improves the stability of the hanging point structure, ensuring the reliability of the battery box during installation and use.

[0012] As a more preferred embodiment, the lower frame further includes multiple limiting beams, which are fixed to both sides of the lower frame and parallel to the frame crossbeams. The fixing plate is disposed inside the limiting beams, and the limiting beams further limit the fixing plate. The beneficial effect is that the limiting beams further limit the fixing plate, preventing it from shifting or loosening during use, enhancing the reliability of the hanging point structure, and ensuring the installation stability of the battery box.

[0013] As a more preferred embodiment, the frame assembly further includes several diagonal support beams, one end of which is fixed to the outside of the lower frame, and the other end is inclined outward and fixed to the bottom of the upper frame. The beneficial effect is that the design of the diagonal support beams further enhances the structural strength of the frame assembly, prevents the upper frame from tilting or deforming during use, and improves the overall stability and load-bearing capacity of the battery box.

[0014] As a more preferred embodiment, one end of the upper frame is provided with a mounting port, which communicates with the accommodating cavity to allow the battery module to be pushed into the accommodating cavity from the mounting port. The upper frame also includes a module mounting bracket, which is fixed to one end of the upper frame after the battery module is pushed into the accommodating cavity to limit the position of the battery module. The advantages are that the design of the mounting port facilitates the pushing and installation of the battery module, while the setting of the module mounting bracket ensures the stable fixation of the battery module in the accommodating cavity, preventing displacement of the battery module during use and improving the safety and reliability of the battery box.

[0015] As a more preferred approach, the skin structure is also provided with multiple inclined beam slots, and the inclined support beam passes through the corresponding inclined beam slots and is fixed to the frame assembly. The advantage of this is that the design of the inclined beam slots allows the inclined support beam to pass through the skin structure and be fixed to the frame assembly, ensuring the ease of installation of the inclined support beam and the integrity of the skin structure, while also enhancing the overall structural strength of the battery box.

[0016] To address the issues raised in the appeal, this utility model also provides a power battery, comprising: the aforementioned electric agricultural machinery battery housing; and a plurality of battery modules, wherein the battery modules are disposed within the accommodating cavity.

[0017] As a more preferred approach, the battery module has multiple fixing threaded holes at its bottom, and the lower frame has multiple welding nuts corresponding to these fixing threaded holes at its bottom. When the battery module is pushed into the lower frame, bolts are used to pass through the welding nuts and the corresponding fixing threaded holes to fix the battery module to the lower frame. The upper frame has a frame support plate at its bottom, the size of which is larger than the top cross-sectional area of ​​the lower frame. The two sides of the support plate are suspended above the lower frame, and multiple welding nuts corresponding to the fixing threaded holes are provided on the outer suspended sides of the support plate. When the battery module is pushed into the upper frame, bolts are used to pass through the welding nuts and the corresponding fixing threaded holes to fix the battery module to the lower frame. Because the upper frame utilizes the suspended space on both sides of the support plate to install the fixing nuts, the overall thickness of the frame assembly is reduced. The advantage is that the battery module is fixed to the frame by bolts and welding nuts, which provides high strength and reliability, ensuring stable fixation of the battery module during use. The upper frame utilizes the suspended space on both sides of the support plate to install fixing nuts, saving the overall thickness of the frame assembly, making the battery box more compact and improving space utilization.

[0018] To address the aforementioned problems, this utility model also provides an electric tractor, comprising: two drive wheels and a steering crossbar assembly connecting the two drive wheels; and the aforementioned power battery, which is mounted on the steering crossbar assembly.

[0019] As described above, the electric agricultural machinery battery box, power battery, and electric tractor of this utility model have the following beneficial effects: Firstly, the electric agricultural machinery battery box of this utility model, through the structural design of the upper and lower frames, allows the battery box to accommodate more battery modules, increasing the energy density of the battery box. At the same time, the upper frame is larger than the lower frame, which can effectively utilize space and increase the number of battery modules that can be placed. Secondly, the hanging point structure is set on the outside of the lower frame. Compared with the bottom hanging point fixing method, it is easier to install and fix the battery box, and it also greatly reduces the overall height of the machine after the battery box is fixed. Finally, the skin structure not only protects the internal battery modules, but also allows the hanging point bracket to extend through the bracket slot, ensuring the structural strength and installation convenience of the battery box.

[0020] The power battery of this utility model uses the above-mentioned electric agricultural machinery battery box to combine battery modules to form a complete power battery. By accommodating multiple battery modules in the electric agricultural machinery battery box, the power battery has a high energy density and a stable structure, which can meet the requirements of electric agricultural machinery and other equipment for battery capacity and reliability.

[0021] This utility model relates to an electric tractor where the power battery is mounted on the steering crossbar assembly, resulting in a more rational battery box installation position, effective utilization of space under the vehicle, and a lower center of gravity, thus improving the tractor's driving stability and operational safety. The power battery provides power to the electric tractor, extending its driving range.

[0022] This utility model relates to an electric agricultural machinery battery box, a power battery, and an electric tractor. Through an irregularly shaped frame assembly design, it takes into account both the turning space required by the electric tractor and the placement space for the battery module. At the same time, by setting the mounting point structure inside the lower frame, it greatly reduces the overall height of the machine after the battery box is fixed, and lowers the center of gravity of the machine. This solves the problems of high center of gravity, obstructed vision, and insufficient range caused by unreasonable layout of the power battery in existing electric tractors. Attached Figure Description

[0023] Figure 1 The diagram shown is an exploded view of the electric agricultural machinery battery box of this utility model.

[0024] Figure 2 Displayed as Figure 1 A magnified view of a portion of region A in the middle;

[0025] Figure 3 This is a schematic diagram of another perspective of the frame assembly of the electric agricultural machinery battery box of this utility model;

[0026] Figure 4 Displayed as Figure 3 A magnified view of a portion of region B in the middle;

[0027] Figure 5 The diagram shown is a structural schematic of the power battery of this utility model.

[0028] Figure 6 Displayed as Figure 5 A magnified view of a portion of region C in the middle;

[0029] Figure 7 The diagram shows the supporting plate of the electric agricultural machinery battery box of this utility model.

[0030] Figure 8 The diagram shows a module mounting bracket for the electric agricultural machinery battery box of this utility model.

[0031] Figure 9 The diagram shown is a structural schematic of the electric tractor of this utility model.

[0032] Component designation explanation

[0033] 11 upper framework 111 Support slab 111a Weld nuts 112 Module mounting bracket 112a Mounting plate 112b Limit plate 12 Lower frame 121 Frame beams 122 Frame uprights 123 Frame connecting rod 124 Reinforced crossbeam 125 Reinforcing vertical bar 126 Limiting the long beam 13 Inclined support beam 14 Corner support reinforcement structure 2 Hanging point structure 21 Fixed plate 22 Hanging bracket 3 Skin structure 31 upper skin 32 Lower skin 321 bracket slot 322 Inclined beam slot 4 drive wheel 5 Steering bar 6 Battery Module Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0038] like Figures 1 to 9As shown, this utility model provides an electric agricultural machinery battery box for housing a battery module 6, comprising:

[0039] The frame assembly 1 includes a lower frame 12 and an upper frame 11 mounted on the lower frame 12. The lower frame 12 and the upper frame 11 are provided with cavities for accommodating battery modules 6. The upper frame 11 is larger than the lower frame 12, and the upper frame 11 can accommodate more battery modules 6 in its accommodating cavities than the lower frame 12.

[0040] Several hanging point structures 2, each hanging point structure 2 includes a fixing plate 21 and a hanging point bracket 22 with one end vertically fixed to the fixing plate 21, the fixing plate 21 being fixed to the outer side of the lower frame 12;

[0041] The skin structure 3 is laid on the outer surface of the frame assembly 1. The skin structure 3 is provided with a plurality of support slots 321, and the other end of the hanging point bracket 22 extends out from the corresponding support slot 321.

[0042] To better illustrate the electric agricultural machinery battery box of this utility model, the following specific application will be used as an example: Firstly, the upper and lower frame 12 structural design of the electric agricultural machinery battery box of this utility model allows the battery box to accommodate more battery modules 6, thereby increasing the energy density of the battery box. At the same time, the upper frame 11 is larger than the lower frame 12, which can effectively utilize space and increase the number of battery modules 6 that can be placed. Secondly, the hanging point structure 2 is set on the outside of the lower frame 12. Compared with the bottom hanging point fixing method, this method is more convenient for the installation and fixing of the battery box, and also greatly reduces the overall height of the machine after the battery box is fixed. Finally, the skin structure 3 not only protects the internal battery modules 6, but also allows the hanging point bracket 22 to extend through the bracket slot 321, ensuring the structural strength and installation convenience of the battery box.

[0043] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the lower frame 12 and the upper frame 11 are cuboid frame structures formed by multiple frame beams 121, multiple frame vertical bars 122, and multiple frame connecting rods 123. The advantage is that the specific structure of the lower frame 12 and the upper frame 11 is clearly defined. The cuboid frame structure is formed by multiple frame beams 121, vertical bars, and connecting rods. This structure has high strength and stability, can effectively protect the internal battery module 6, and is convenient for production and assembly.

[0044] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2As shown, the lower frame 12 also includes multiple reinforcing crossbeams 124 and multiple reinforcing vertical rods 125. The reinforcing vertical rods 125 are arranged between the frame crossbeams 121, and both ends of the reinforcing vertical rods 125 are vertically fixed to the frame crossbeams 121 respectively. The reinforcing crossbeams 124 are arranged horizontally between the frame crossbeams 121, and both ends of the reinforcing crossbeams 124 are fixed to the frame vertical rods 122 respectively. The four sides of the fixing plate 21 are fixed to the frame crossbeams 121, the frame vertical rods 122, the reinforcing crossbeams 124, and the reinforcing vertical rods 125 respectively. The beneficial effect is that the arrangement of the reinforcing crossbeams 124 and vertical rods further enhances the structural strength of the lower frame 12 and prevents the frame from deforming under stress. The multi-point fixing of the fixing plate 21 to the lower frame 12 improves the stability of the hanging point structure 2 and ensures the reliability of the battery box during installation and use.

[0045] In some possible embodiments of this utility model, the four sides of the fixing plate 21 are fixed to the frame crossbeam 121, frame vertical bar 122, reinforcing crossbeam 124 and reinforcing vertical bar 125 by welding. The advantage is that the fixing plate 21 is fixed by welding, which has high connection strength, can ensure a firm connection between the fixing plate 21 and the frame, and improve the overall structural stability of the battery box.

[0046] In some possible embodiments of this utility model, such as Figure 3 as well as Figure 4 As shown, the lower frame 12 also includes multiple limiting beams 126. The limiting beams 126 are fixed to both sides of the lower frame 12 and are parallel to the frame crossbeams 121. The fixing plate 21 is disposed inside the limiting beams 126, and the limiting beams 126 further limit the fixing plate 21. The beneficial effect is that the setting of the limiting beams 126 further limits the fixing plate 21, preventing the fixing plate 21 from shifting or loosening during use, enhancing the reliability of the hanging point structure 2, and ensuring the installation stability of the battery box.

[0047] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 5As shown, the battery modules 6 are arranged side-by-side in the corresponding accommodating cavities along their width direction, and the number of battery modules 6 that can be accommodated in the accommodating cavity of the upper frame 11 is greater than that of the lower frame 12. Therefore, in the width direction of the battery modules 6, the size of the upper frame 11 is larger than that of the lower frame 12, while in the length direction of the battery modules 6, the size of the upper frame 11 is the same as that of the lower frame 12. The beneficial effect is that the battery modules 6 are arranged side-by-side along the width direction, and the size of the upper frame 11 in the width direction is larger than that of the lower frame 12, so that the upper frame 11 can accommodate more battery modules 6, thereby increasing the battery capacity of the entire battery box and meeting higher energy demands.

[0048] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the axis of symmetry of the upper frame 11 and the axis of symmetry of the lower frame 12 are on the same straight line. The upper frame 11 is suspended on both sides along its width direction above the lower frame 12. The advantage of this is that the axes of symmetry of the upper frame 11 and the lower frame 12 are on the same straight line, ensuring the overall balance and stability of the battery box. The suspended arrangement of the upper frame 11 along its width direction makes the structure more compact and effectively utilizes space.

[0049] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the frame assembly 1 also includes several inclined support beams 13. One end of the inclined support beam 13 is fixed to the outside of the lower frame 12, and the other end is inclined outward and fixed to the bottom of the upper frame 11. Its beneficial effect is that the design of the inclined support beam 13 further enhances the structural strength of the frame assembly 1, prevents the upper frame 11 from tilting or deforming during use, and improves the overall stability and load-bearing capacity of the battery box.

[0050] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the frame assembly 1 includes six inclined support beams 13. The inclined support beams 13 are distributed on both sides of the lower frame 12 in the width direction. One end of each beam is fixed to the frame vertical bar 122 of the lower frame 12, and the other end is fixed to the frame connecting rod 123 of the upper frame 11. The beneficial effect is that the reasonable distribution of the six inclined support beams 13 ensures the connection strength and stability between the lower frame 12 and the upper frame 11, further improving the structural rigidity of the battery box and enabling it to withstand greater external impact.

[0051] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2As shown, one end of the upper frame 11 is provided with an installation port, which communicates with the accommodating cavity to allow the battery module 6 to be pushed into the accommodating cavity from the installation port. The upper frame 11 also includes a module mounting bracket 112. After the battery module 6 is pushed into the accommodating cavity, the module mounting bracket 112 is fixed to one end of the upper frame 11 to limit the position of the battery module 6. The beneficial effect is that the design of the installation port facilitates the pushing and installation of the battery module 6, and the setting of the module mounting bracket 112 ensures the stable fixation of the battery module 6 in the accommodating cavity, preventing the battery module 6 from shifting during use, and improving the safety and reliability of the battery box.

[0052] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the upper frame 11 also includes a stop at the other end of the upper frame 11. The upper frame 11 includes two module mounting brackets 112, one of which is fixed at the mounting opening, and the other is fixed at the stop of the upper frame 11. The beneficial effect is that the cooperation between the stop and the module mounting bracket 112 makes the battery module 6 more securely fixed in the accommodating cavity. The limiting design at both ends effectively prevents the longitudinal displacement of the battery module 6 during use, and improves the overall stability of the battery box.

[0053] In some possible embodiments of this utility model, such as Figure 8 As shown, the module mounting bracket 112 includes a mounting plate 112a and a limiting plate 112b vertically disposed on the mounting plate 112a. The mounting plate 112a and the supporting plate 111 are provided with a plurality of mutually compatible fixing holes. The mounting plate 112a is fixed to the supporting plate 111 by means of locking members passing through the corresponding fixing holes. The mounting plate 112a and the limiting plate 112b are manufactured by an integral molding process. In this embodiment, they are manufactured by sheet metal process.

[0054] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the lower frame 12 and the upper frame 11 are also provided with mounting ports at one end and stop ports at the other end. The mounting ports are connected to the accommodating cavity to allow the battery module 6 to be pushed into the accommodating cavity from the mounting ports. The beneficial effect is that both the lower frame 12 and the upper frame 11 are provided with mounting ports and stop ports, which makes the installation and fixing of the battery module 6 more flexible and convenient, while ensuring the stability and safety of the battery module 6 within the two frames.

[0055] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the skin structure 3 is also provided with multiple inclined beam slots 322, and the inclined support beam 13 passes through the inclined beam slots 322 at the corresponding positions and is fixed to the frame assembly 1. Its beneficial effect is that the design of the inclined beam slots 322 allows the inclined support beam 13 to pass through the skin structure 3 and be fixed to the frame assembly 1, ensuring the ease of installation of the inclined support beam 13 and the integrity of the skin structure 3, while enhancing the overall structural strength of the battery box.

[0056] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the bracket slot 321 is a rectangular slot, and the bracket slot 321 is fully welded to ensure the airtightness of the electric agricultural machinery battery box. Its beneficial effect is that the bracket slot 321 is fully welded, which effectively ensures the airtightness of the battery box, prevents external dust, moisture and other substances from entering the box and affecting the normal operation of the battery module 6, and improves the protection level of the battery box.

[0057] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the inclined support beam 13 is made of rectangular tube, and the inclined beam slot 322 is a U-shaped slot adapted to the cross-section of the fixed tube. The U-shaped slot is filled with the gap between the inclined support beams 13 by weld, thereby ensuring the airtight performance of the electric agricultural machinery battery box. Its beneficial effect is that the inclined support beam 13 is made of rectangular tube, and the U-shaped slot is filled with the gap by weld. This design not only ensures the installation strength of the inclined support beam 13, but also further enhances the airtight performance of the battery box, and improves the reliability and durability of the product.

[0058] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the lower frame 12 is also provided with several corner support reinforcement structures 14. Each corner support reinforcement structure 14 includes two mutually perpendicular right-angled surfaces. The corner support reinforcement structure 14 is engaged within the upper and lower right angles formed by the reinforcing beam 124 and the frame vertical rod 122. The two right-angled surfaces of the corner support reinforcement structure 14 are respectively attached to the frame beam 121 and the frame vertical rod 122. Furthermore, the fixing plate 21 is disposed on the outside of the corner support reinforcement structure 14. Its beneficial effect is that the design of the corner support reinforcement structure 14 further enhances the structural strength at the connection between the reinforcing beam 124 and the frame vertical rod 122, improves the overall rigidity and impact resistance of the battery box, and provides more stable support for the fixing plate 21, ensuring the reliability of the hanging point structure 2.

[0059] In some possible embodiments of this utility model, such as Figure 1 as well as Figure 2 As shown, the skin structure 3 includes a lower skin 32 covering the lower part of the frame assembly 1 and an upper skin 31 covering the upper part of the frame assembly 1, wherein the bracket slot 321 and the inclined beam slot 322 are formed on the lower skin 32.

[0060] To address the issues raised in the appeal, this utility model also provides a power battery, comprising: the aforementioned electric agricultural machinery battery housing; and a plurality of battery modules 6, wherein the battery modules 6 are disposed within the accommodating cavity.

[0061] To better illustrate the power battery of this utility model, the following specific application will be used as an example: The power battery of this utility model uses the above-mentioned electric agricultural machinery battery box combined with battery modules 6 to form a complete power battery. By accommodating multiple battery modules 6 in the electric agricultural machinery battery box, the power battery has a high energy density and a stable structure, which can meet the requirements of electric agricultural machinery and other equipment for battery capacity and reliability.

[0062] In some possible embodiments of this utility model, such as Figure 5 as well as Figure 6 As shown, the power battery includes five battery modules 6, two of which are disposed in the accommodating cavity of the lower frame 12 and three of which are disposed in the accommodating cavity of the upper frame 11. The advantage of this arrangement is that it specifically defines the number of battery modules 6 in the power battery. The lower frame 12 holds two battery modules 6 and the upper frame 11 holds three battery modules 6. This layout can make full use of the space of the battery box, improve energy storage efficiency, and at the same time ensure the reasonable distribution and stability of the battery modules 6.

[0063] In some possible embodiments of this utility model, such as Figure 7As shown, the battery module 6 has multiple fixing threaded holes at its bottom, and the lower frame 12 has multiple welding nuts 111a corresponding to the fixing threaded holes at its bottom. When the battery module 6 is pushed into the lower frame 12, bolts are used to pass through the welding nuts 111a and the corresponding fixing threaded holes to fix the battery module 6 to the lower frame 12. The upper frame 11 has a frame support plate 111 at its bottom. The size of the support plate 111 is larger than the top cross-sectional area of ​​the lower frame 12. The two sides of the support plate 111 are suspended above the two sides of the lower frame 12, and the support plate 111 is close to... Multiple welded nuts 111a, corresponding to fixed threaded holes, are provided on both sides of the upper frame 11. When the battery module 6 is pushed into the upper frame 11, bolts are used to pass through the welded nuts 111a and the corresponding fixed threaded holes to fix the battery module 6 to the lower frame 12. Since the upper frame 11 utilizes the suspended space on both sides of the support plate 111 to install the fixing nuts, the overall thickness of the frame assembly 1 is reduced. The beneficial effect is that the battery module 6 is fixed to the frame by bolts and welded nuts 111a. This connection method has high strength and reliability, ensuring the stable fixation of the battery module 6 during use. The upper frame 11 utilizes the suspended space on both sides of the support plate 111 to install the fixing nuts, saving the overall thickness of the frame assembly 1, making the battery box more compact and improving space utilization.

[0064] To solve the above problems, such as Figure 9 As shown, this utility model also provides an electric tractor, including: two drive wheels 4 and a steering crossbar 5 assembly connecting the two drive wheels 4; and the aforementioned power battery, which is mounted on the steering crossbar 5 assembly.

[0065] To better illustrate the electric tractor of this utility model, the following specific application will be used as an example: The electric tractor of this utility model mounts the power battery on the steering crossbar 5 assembly, making the battery box installation position more reasonable, effectively utilizing the space under the vehicle, lowering the overall center of gravity, and improving the tractor's driving stability and operational safety. The power battery provides power support to the electric tractor, extending its driving range. It can be seen that the electric agricultural machinery battery box, power battery, and electric tractor of this utility model, through the design of the irregularly shaped frame assembly 1, take into account both the steering space required by the electric tractor and the placement space for the battery module 6. Furthermore, by placing the mounting point structure 2 inside the lower frame 12, the overall height of the machine after the battery box is fixed is greatly reduced, lowering the overall center of gravity and solving the problems of high overall center of gravity, obstructed vision, and insufficient driving range caused by unreasonable layout of the power battery in existing electric tractors.

[0066] As described above, the electric agricultural machinery battery box, power battery, and electric tractor of this utility model have the following beneficial effects:

[0067] 1. Space utilization and energy density enhancement:

[0068] Upper and lower frame 12 design: The upper frame 11 is larger than the lower frame 12, which can accommodate more battery modules 6, improve the energy density of the battery box, and meet higher energy requirements.

[0069] Battery module 6 layout: The battery modules 6 are arranged side by side along the width direction. The upper frame 11 is larger than the lower frame 12 in the width direction, so that the upper frame 11 can accommodate more battery modules 6 and optimize space utilization.

[0070] 2. Structural strength and stability:

[0071] Rectangular frame structure: The lower frame 12 and the upper frame 11 adopt a rectangular frame structure, which has high strength and stability and effectively protects the internal battery module 6.

[0072] Reinforcing beams 124 and vertical members: The reinforcing beams 124 and vertical members enhance the structural strength of the lower frame 12 and prevent the frame from deforming under stress.

[0073] Inclined support beam 13: The design of inclined support beam 13 further enhances the structural strength of frame assembly 1, prevents the upper frame 11 from tilting or deforming during use, and improves the overall stability and load-bearing capacity of the battery box.

[0074] 3. Ease of installation:

[0075] Hanging point structure 2: Hanging point structure 2 is set on the outside of the lower frame 12, which facilitates the installation and fixation of the battery box and reduces the overall height of the machine after the battery box is fixed.

[0076] Mounting ports and module mounting brackets 112: Both the upper frame 11 and the lower frame 12 are provided with mounting ports and module mounting brackets 112, which makes the installation and fixing of the battery module 6 more flexible and convenient, and ensures the stable fixing of the battery module 6 in the accommodating cavity.

[0077] 4. Sealing performance and protection:

[0078] Skin structure 3: Skin structure 3 is laid on the outer surface of frame assembly 1 to protect the internal battery module 6. Through the design of bracket slot 321 and inclined beam slot 322, it ensures that the hanging point bracket 22 and inclined support beam 13 can extend, while ensuring the airtight performance of the battery box.

[0079] Full welding treatment: The bracket slot 321 and the inclined beam slot 322 are fully welded to effectively prevent external dust, moisture and other substances from entering the box and affecting the normal operation of the battery module 6, thereby improving the protection level of the battery box.

[0080] 5. Overall layout and balance:

[0081] Symmetry axis design: The symmetry axis of the upper frame 11 and the symmetry axis of the lower frame 12 are on the same straight line, which ensures the overall balance and stability of the battery box.

[0082] Suspended configuration: The upper frame 11 is suspended on both sides along the width direction above the lower frame 12, making the structure more compact and making effective use of space.

[0083] 6. Modularity and flexibility:

[0084] Battery module 6 quantity allocation: The specific allocation of the number of battery modules 6 in the power battery is specified. Two battery modules 6 are placed in the lower frame 12 and three battery modules 6 are placed in the upper frame 11. This layout can make full use of the space of the battery box and improve energy storage efficiency.

[0085] Fixed threaded hole and welding nut 111a: The battery module 6 is fixed to the frame by bolts and welding nut 111a, which ensures the stable fixation of the battery module 6 during use, while saving the overall thickness of the frame assembly 1 and improving space utilization.

[0086] 7. Application scenario adaptation:

[0087] Application in electric tractors: The power battery is mounted on the steering crossbar 5 assembly of the electric tractor, which effectively utilizes the space under the vehicle, lowers the center of gravity of the vehicle, improves driving stability and operational safety, and extends the driving range.

[0088] This utility model's electric agricultural machinery battery box achieves efficient space utilization and increased energy density through an innovative upper and lower frame design 12. The reinforcing crossbeams 124, vertical rods, and diagonal support beams 13 enhance structural strength and stability, ensuring the battery box's reliability and safety under various working conditions. The design of the hanging point structure 2 and the skin structure 3 improves installation convenience and sealing performance, protecting the internal battery modules 6 from external environmental influences. The symmetrical axis design and suspended configuration ensure the overall layout's balance and compactness. The modular design and the distribution of the battery modules 6 optimize space utilization and improve energy storage efficiency. Its application in electric tractors fully utilizes the vehicle's underbody space, lowers the vehicle's center of gravity, and improves driving stability and driving range. Overall, this utility model solves the problems of low space utilization, inconvenient installation, and insufficient protection caused by unreasonable layout structures in existing electric agricultural machinery battery boxes, providing a highly efficient, stable, and user-friendly battery box solution.

[0089] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0090] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A battery box for electric agricultural machinery, used to house a battery module (6), characterized in that, include: The frame assembly (1) includes a lower frame (12) and an upper frame (11) mounted on the lower frame (12). The lower frame (12) and the upper frame (11) are provided with accommodating cavities for accommodating battery modules (6). The size of the upper frame (11) is larger than that of the lower frame (12), and the number of battery modules (6) that can be accommodated in the accommodating cavity of the upper frame (11) is greater than that of the lower frame (12). Several hanging point structures (2) are provided, the hanging point structure (2) includes a fixing plate (21) and a hanging point bracket (22) with one end vertically fixed to the fixing plate (21), the fixing plate (21) is fixed to the outer side of the lower frame (12); The skin structure (3) is laid on the outer surface of the frame assembly (1). The skin structure (3) is provided with a plurality of bracket slots (321). The other end of the hanging point bracket (22) extends out from the corresponding bracket slot (321).

2. The electric agricultural machinery battery box according to claim 1, characterized in that: The lower frame (12) and the upper frame (11) are rectangular frame structures formed by multiple frame beams (121), multiple frame vertical bars (122) and multiple frame connecting bars (123).

3. The electric agricultural machinery battery box according to claim 2, characterized in that: The lower frame (12) also includes multiple reinforcing crossbeams (124) and multiple reinforcing vertical rods (125). The reinforcing vertical rods (125) are arranged between the frame crossbeams (121), and the two ends of the reinforcing vertical rods (125) are respectively fixed vertically to the frame crossbeams (121). The reinforcing crossbeams (124) are arranged horizontally between the frame crossbeams (121), and the two ends of the reinforcing crossbeams (124) are respectively fixed to the frame vertical rods (122). The four sides of the fixing plate (21) are respectively fixed to the frame crossbeams (121), the frame vertical rods (122), the reinforcing crossbeams (124), and the reinforcing vertical rods (125).

4. The electric agricultural machinery battery box according to claim 2, characterized in that: The lower frame (12) also includes multiple limiting beams (126), which are fixed on both sides of the lower frame (12) and parallel to the frame crossbeam (121). The fixing plate (21) is disposed inside the limiting beam (126), and the limiting beam (126) further limits the fixing plate (21).

5. The electric agricultural machinery battery box according to claim 1, characterized in that: The frame assembly (1) also includes several inclined support beams (13), one end of which is fixed to the outside of the lower frame (12), and the other end is inclined outward and fixed to the bottom of the upper frame (11).

6. The electric agricultural machinery battery box according to claim 1, characterized in that: The upper frame (11) is provided with an installation port at one end, which is connected to the accommodating cavity to allow the battery module (6) to be pushed into the accommodating cavity from the installation port; the upper frame (11) also includes a module mounting bracket (112), which is fixed to one end of the upper frame (11) after the battery module (6) is pushed into the accommodating cavity to limit the position of the battery module (6).

7. The electric agricultural machinery battery box according to claim 5, characterized in that: The skin structure (3) is also provided with multiple inclined beam slots (322), and the inclined support beam (13) passes through the inclined beam slots (322) at the corresponding positions and is fixed to the frame assembly (1).

8. A power battery, characterized in that, include: The electric agricultural machinery battery box according to any one of claims 1 to 7; a plurality of battery modules (6), wherein the battery modules (6) are disposed in the accommodating cavity.

9. The power battery according to claim 8, characterized in that: The battery module (6) has multiple fixing threaded holes at its bottom, and the lower frame (12) has multiple welding nuts (111a) corresponding to the fixing threaded holes at its bottom. When the battery module (6) is pushed into the lower frame (12), the battery module (6) is fixed to the lower frame (12) by bolts passing through the welding nuts (111a) and the corresponding fixing threaded holes. The upper frame (11) has a frame support plate (111) at its bottom. The size is larger than the top cross-sectional area of ​​the lower frame (12). The two sides of the support plate (111) are suspended above the two sides of the lower frame (12). The two sides of the support plate (111) that are suspended to the outside are provided with a plurality of welding nuts (111a) corresponding to the fixing threaded holes. When the battery module (6) is pushed into the upper frame (11), the battery module (6) is fixed to the lower frame (12) by using bolts passing through the welding nuts (111a) and the corresponding fixing threaded holes.

10. An electric tractor, characterized in that, include: Two drive wheels (4) and a steering crossbar (5) assembly connecting the two drive wheels (4); The power battery according to any one of claims 8 to 9, wherein the power battery is mounted on the steering crossbar (5) assembly.

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